SubnetLab Pro is a single, self-contained offline HTML file. Open it in any browser, no internet connection, no account, no ads. You get 63+ networking utilities in one place: IPv4 and IPv6 calculators, VLSM planning, a BGP simulator, an STP topology visualizer, DHCP DORA animation, binary conversion utilities, routing and subnetting helpers.

It was built by Chaithanya Katari, a Network Implementation Manager at Akamai.

Everything is here from CCNA study resources and BGP references. My personal favorite is the interview prep section here. The broken scenario questions are also fun to try on your lunch break.

The result is something no product team would ever ship: maximally useful and completely free.

→ SubnetLab Pro

https://chaithu-lets-code.github.io/SubnetPro/#about

Shankar Wi-Fi has 75+ technical reference pages, five interactive tools, 802.11 protocol animations, an MCS calculator, OFDMA resource unit allocation visualizations, and Wi-Fi 7 / 8 explanations for free.

It was built by a wireless engineer, Shankar K, with 15+ years in protocol analysis.

His tools have a crazy amount of resources, but if you have a few minutes to spare, these are my favorites:

This is a crazy amount of effort to consolidate 802.11 information in one place. Bravo Shankar!

→ shankarwifi.com

For years, if you missed a WLPC session, you could always find it on YouTube. However, if you remembered a tiny moment from a very specific topic, you’d have to dig through to find the right talk. WLAN Tech Talks has indexed 1,126 WLPC and Wi-Fi Design Day sessions from 2014 to today, searchable by speaker, topic, keyword, and conference year.

Making it searchable is not only convenience improvement. It's making this content more accessible for those that get overwhelmed and just need to learn specific topics at a time.

Note: I have no idea who made this, but shout out to you. Appears to be made with Vercel.

→ wlan-talks.net

https://wlan-talks.net/

None of these were funded or went through UX testing cycles or product roadmaps. Someone had a specific problem, chipped away at it and made the solution available to the community.

With AI-assisted development, a single engineer can now build what previously needed a team. Practitioners are becoming builders. The people who understand the field are now also the people who can ship tools. (Within reason)

I LOVE trying all these tools to create solutions. But we need to address one thing:

Security.

I’ve been looking more into vibe-coding best practices for security and program design. Those are key areas where software developers have expertise where us non-coding folk may not.

Oftentimes, I’ll ask the chat agent to search for most common website vulnerabilities or something to that affect. You’ll be surprised how many cleartext API keys are in front-end code. These tools have a tendency to throw everything into an HTML file and call it a day.

One of my peers in the LinkedIn world, Erika Dietrick, is working on a course to address this specifically. Unsure when it will hit primetime, but be on the lookout!

Meanwhile, there are other resources on such as the SHIELD framework from Unit42, but there’s conflicting thoughts on how to address the security holes in vibe coded apps. I wouldn’t feel confident shipping an app handling any sensitive data if I’m not running it in my own isolated environment without having a developer review it for these issues.

How many tools do you wish existed that you haven't built yet? Is anything stopping you?

P.S. If you want to go further with AI + network engineering, Build Intelligent Networks with AI Cohort 2 is on June 20 (Virtual). John Capobianco and William Collins will go over MCP workflows, agentic automation, spec-driven development, and production-ready AI-assisted network operations. Use code EVA40 for a 40% discount. Not sponsored. John is a consummate professional that I’ve met at SharkFest and I’m happy to spend time sharing his work.

Until next week,
Eva